This file is a lookup between electoral wards/divisions, Westminster parliamentary constituencies and local authority districts in the United Kingdom as at 31 December 2017. (File Size - 2 MB) Field Names - WD17CD, WD17NM, PCON17CD, PCON17NM, LAD17CD, LAD17NMField Types - Text, Text, Text, Text, Text, TextField Lengths - 9, 56, 9, 41, 9, 36REST URL of Feature Access Service – https://services1.arcgis.com/ESMARspQHYMw9BZ9/arcgis/rest/services/WD17_PCON17_LAD17_UK_LU_0a2487b50f7443e397e4a677ac96f146/FeatureServer